Lipari, Italy

Lipari

Volcano Type:      Stratovolcanoes
Volcano Status:    Radiocarbon
Last Known Eruption:     1230 ± 40 years
Summit Elevation:     602 m     1,975 feet
Latitude:     38.48°N     38°29’0″N
Longitude:     14.95°E     14°57’0″E

Lipari, the largest of the Aeolian Islands, is located immediately north of Vulcano Island. The irregular-shaped island contains numerous small stratovolcanoes, craters, and lava domes on a basement of submarine volcanic deposits. Lipari was formed in three major eruptive cycles, the first of which took place from about 223 to 188 thousand years ago (ka) from N-S-trending fissures on the western side of the island. The second eruptive period from about 102 to 53 ka included the formation of the Monte San Angelo and Costa d’Agosto stratovolcanoes in the center of the island. The third eruptive cycle (40 ka to the present) included the Monte Guardia sequence, erupted at the southern tip of the island between about 22,600 and 16,800 years ago, and Holocene rhyolitic pyroclastic deposits and obsidian lava flows at the NE end of the island. The latest eruption, at Monte Pilato on the NE tip of the island, formed the Rocche Rosse and Forgia Vecchia obsidian lava flows, which have been dated variously from about 500 to 1230 AD. Objects made of obsidian from Lipari have been found throughout southern Italy.

Lipari Harbour

Lipari Harbour

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Originally posted 2010-09-02 11:24:48.

Ischia, Italy

Ischia

Volcano Type:      Complex volcano
Volcano Status:    Historical
Last Known Eruption:     1302
Summit Elevation:     789 m     2,589 feet
Latitude:     40.73°N     40°44’0″N
Longitude:     13.897°E     13°53’51″E

The Ischia volcanic complex forms a rectangular, 6 x 9 km island immediately SW of the Campi Flegrei area at the western side of the Bay of Naples. The eruption of the trachytic Green Tuff ignimbrite about 56,000 years ago was followed by caldera formation. The high point on the island, 789-m-high Monte Epomeo, is a volcanic horst composed of the Green Tuff ignimbrite deposit that was submerged after its eruption and then uplifted. Volcanism on the island has been significantly affected by tectonism that formed a series of horsts and grabens; at least 800 m of uplift has formed as a result of resurgent doming during past 33,000 years. Many small monogenetic volcanoes were formed around the uplifted block. Volcanism during the Holocene produced a series of pumiceous tephras, tuff rings, lava domes, and lava flows, and a major collapse of Mount Epomeo produced a large submarine debris-avalanche deposit. The latest eruption of Ischia, in 1302 AD, produced a spatter cone and the Arso lava flow, which reached the NE coast.

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Originally posted 2010-09-01 03:10:11.

Pantelleria, Italy

Pantelleria

Volcano Type:      Shield volcano
Volcano Status:    Historical
Last Known Eruption:     1891
Summit Elevation:     836 m     2,743 feet
Latitude:     36.77°N     36°46’0″N
Longitude:     12.02°E     12°1’0″E

Coast of Pantelleria

Coast of Pantelleria

The island of Pantelleria is constructed above a drowned continental rift in the Strait of Sicily and has been the locus of intensive volcano-tectonic activity. Two large Pleistocene calderas dominate the island, which contains numerous post-caldera lava domes and cinder cones and is the type locality for peralkaline rhyolitic rocks, pantellerites. The 15-km-long island is the emergent summit of a largely submarine edifice. The 6-km-wide Cinque Denti caldera, the youngest of the two calderas, formed about 45,000 years ago and contains the two post-caldera shield volcanoes of Monte Grande and Monte Gibele. Holocene eruptions have constructed pumice cones, lava domes, and short, blocky lava flows. Many Holocene vents are located on three sides of the uplifted Montagna Grande block on the SE side of the island. A submarine eruption in 1891 from a vent off the NW coast is the only confirmed historical activity.

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Originally posted 2010-09-02 11:12:29.

Stromboli, Italy

Stromboli

Volcano Type:      Stratovolcano
Volcano Status:    Historical
Last Known Eruption:     2010 (continuing)
Summit Elevation:     924 m     3,031 feet
Latitude:     38.789°N     38°47’22″N
Longitude:     15.213°E     15°12’47″E

Spectacular incandescent nighttime explosions at Stromboli volcano have long attracted visitors to the “Lighthouse of the Mediterranean.” Stromboli, the NE-most of the Aeolian Islands, has lent its name to the frequent mild explosive activity that has characterized its eruptions throughout much of historical time. The small, 924-m-high island of Stromboli is the emergent summit of a volcano that grew in two main eruptive cycles, the last of which formed the western portion of the island. The Neostromboli eruptive period from about 13,000 to 5000 years ago was followed by formation of the modern Stromboli edifice. The active summit vents are located at the head of the Sciara del Fuoco, a prominent horseshoe-shaped scarp formed about 5000 years ago as a result of the most recent of a series of slope failures that extend to below sea level. The modern volcano has been constructed within this scarp, which funnels pyroclastic ejecta and lava flows to the NW. Essentially continuous mild strombolian explosions, sometimes accompanied by lava flows, have been recorded at Stromboli for more than a millennium.

Stromboli volcano eruption

Stromboli volcano eruption

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Originally posted 2010-09-01 02:46:35.